If Outlook is receiving emails but not sending them, check your internet connection first. Then, ensure that your account settings are correct, including your SMTP server settings. It's also a good idea to verify that there are no large attachments that might be causing the issue. Sometimes, antivirus software or firewalls can block outgoing emails, so ensure they are configured correctly. Finally, you can try restarting Outlook or your device. If the problem persists, additional troubleshooting may be needed.
Asked Feb 24, 2026 1:23 PM